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Hello All,
After installing ROS on my Ubuntu, I was trying to follow the tutorials under the simulator_gazebo. But I have gotten an error message for this command:
rosrun gazebo spawn_model -file `pwd`/object.urdf -urdf -z 1 -model my_object
Error message:
ImportError: No module named rospkg
Could it be from the installation? I think everything went well during the installation.
Any thoughts?
Thanks,
The accepted answer (as of Feb 2017) is outdated. Unless you need to customize, using binary is strongly recommended IMO. See the instruction on ros wiki for how to install.
UPDATE 2019-02-02: Looks like this is still a popular question. apt worked for 18.04 for me on a docker container that I just pulled from online.
$ docker pull ros:melodic-ros-core
melodic-ros-core: Pulling from library/ros
Digest: sha256:206a3a506cda320b525ef2cf2587726ee01451f470be4dfdd80cd20693840f27
Status: Image is up to date for ros:melodic-ros-core
$ docker run -it ros:melodic-ros-core /bin/bash
# apt-get purge python-rospkg && apt-get update && apt-get install -y ipython python-rospkg
:
Unpacking python-rospkg (1.1.7-100) ...
Setting up python-rospkg (1.1.7-100) ...
root@4a5281183177:/# ipython
:
In [1]: import rospkg
In [2]: rp = rospkg.RosPack()
In [3]:
Even with rospkg installed I still have the issue on Kubntu 18.04. Changing the PYTHONPATH variable solves the issue.
If you've installed everything from binaries and are using the system, default Python 2 installation, everything should-just-work. If it doesn't, and you have to change PYTHONPATH, something is wrong and you should resolve it.
@130s answer is correct, and I don't think the downvote is justified.
@VictorLamoine I second to @gvdhoorn. Although I'm not sure how similar/same kubuntu is to any OSes ROS supports, any issues for the released binary must be fixed w/o adhoc workaround IMO. Maybe file at ros-infrastructure/rospkg.
Even after installing via apt-get I am getting the same error. $ which python produces
/home/userName/anaconda3/bin/python .
The reason this error occurs is because Python packages in /opt are added to PYTHONPATH environment variable BUT for ones in /usr, path does not exist in PYTHONPATH variable. The python-rospkg gets installed in /usr by default. So you just need following line in .bashrc to fix this:
export PYTHONPATH=$PYTHONPATH:/usr/lib/python2.7/dist-packages
Hi :) I'm having issues because I'm using anaconda...I get an error because of the different PYTHONPATH used by anaconda. How can I use Anaconda with ROS?
I have a same situation with @Ahmed Abdalla. The issue was solved by following this answer.
I did pip install rospkg since I have anaconda. It worked.
(as a side note, for some packages I also got "No module named Em", for which I used pip install empy)
Worked for me. I installed rospkg and catkin_package via pip
Update 06/04/2022:
When using Ubuntu 20.04, which uses python3 install python3-rospkg.
Previous (alternative) solution (not recommended anymore):
I am using ROS noetic on Ubuntu 20.04 which uses python3. To fix the error, in my case I had to install
sudo apt install python-is-python3
Hi,
since Fuerte, rospkg is standalone, so you will have to install it seperately e.g. by source:
$ git clone git://github.com/ros/rospkg.git $ python setup.py install --user
Can you be more clearer? What worked well, I have the same problem
I am also interested in your solution. I have a similar question here: http://answers.ros.org/question/44669/fuerte-no-module-named-rospkg/ . I have used the solution suggested here: install rospkg, but that does not suffice for me.
michikarg solution worked. People who have installed both versions of python 2.6 and 2.7 should do the following
$ git clone git://github.com/ros/rospkg.git $ cd rospkg $ python2.6 setup.py install --user
error: unknown option `user' usage: git clone [options] [--] <repo> [
Same here, with ros fuerte on ubuntu 11.10 and python 2.7.3 .. The problem appears after last updates from repository.. I'm having the issue while compiling my package.. Last week all was fine, from this morning no
Asked: 2012-07-24 05:11:17 -0500
Seen: 126,644 times
Last updated: Apr 06 '22
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Did you install Electric or Fuerte?
I followed instruction through this link http://www.ros.org/wiki/fuerte/Installation/Ubuntu. I guess it is Fuerte.
I am posting the entire message. Also version of python on my system is 2.7.1. Any help?
This can also happen if you are running the file with the wrong python interpreter. This might be the first thing you notice as import rospy is often the first import in a file. Not the problem here but this may be useful for others looking later
This should go as an edit to your original question.
thanks pjusesros. i forgot that i had set pyenv global python to be python3.8 after changing it to system python version everything worked fine. thanks for saving me from what otherwise was going to be a nightmare.